如何在页面取消发送时发送AJAX PUT请求而不取消请求?

问题描述

我正在尝试在unload事件上发送PUT请求，但是该请求始终被取消.

I'm trying to send a PUT request on the unload event, however the request is always cancelled.

这里的回答说这是不可能的:如何执行在页面上卸载ajax调用?

Answers here says it's not possible:How to perform an ajax call on page unload?

这里的答案表明有可能:如何页面卸载/离开时如何发送AJAX请求?

Answers here suggests it's possible:How do I send an AJAX request upon page unload / leaving?

我是否可以在卸载时发送AJAX请求，如果可以的话，如何在不取消的情况下进行发送.

Can I send an AJAX request on unload, if so how can I without being cancelled.

我不在乎响应，我不需要响应.只需向服务器发送一些信息，说该页面已关闭而没有保持活动状态.

I don't care about the response, I don't need a response. Just need to send some info to the server saying the page was closed without keep alive checks.

推荐答案

您需要做的就是使ajax调用同步.这样，浏览器将在关闭窗口/选项卡之前等待响应，并且不会被取消.

All you need to do is make the ajax call synchronous. That way the browser will wait for the response before closing the window/tab and it will not be cancelled.

$(window).unload(function(){
    $.ajax({
        type: 'PUT',
        url: '/your_url.php',
        async:false, //IMPORTANT, the call will be synchronous
        data: {}
    }).done(function(data) {
        console.log('complete');
    });
});

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